{"id":3780,"date":"2026-10-22T18:18:20","date_gmt":"2026-10-22T10:18:20","guid":{"rendered":"https:\/\/www.hosonwater.com\/?p=3780"},"modified":"2026-10-22T18:18:20","modified_gmt":"2026-10-22T10:18:20","slug":"modular-design-for-containerised-water-treatment-plants","status":"publish","type":"post","link":"https:\/\/www.hosonwater.com\/de\/modular-design-for-containerised-water-treatment-plants\/","title":{"rendered":"Modular Design for Containerised Water Treatment Plants"},"content":{"rendered":"

Adding another container should solve a capacity problem. Suppose, however, that your feed pump is already supplying all the water it can deliver. An extra filtration line would still be waiting for feed. For a containerised water treatment plant, that is the first expansion question to resolve on paper: what else must change when you add a treatment unit?<\/p>\n

Process boundaries follow the water<\/b><\/strong><\/h2>\n

Raw water sets the first boundary. One clear-water sample cannot represent every condition at a surface-water intake. Include the expected variation in the design basis for your modular water treatment plant. Feed quality affects membrane flux, so check whether the new source supports the specified duty before copying a design from another site.<\/p>\n

Sketch the freshwater process before fitting it into an enclosure. Your starting points are the source analysis and the finished-water requirement. Pretreatment and ultrafiltration (UF), for example, can be reviewed separately from disinfection and storage without deciding yet how many containers to buy. Once the required sequence is settled, work on the equipment layout and enclosure boundaries.<\/p>\n

Follow a wash cycle across the proposed package boundary. Draw the line from its water supply right through to the drain, including any tank outside the enclosure. Put those connections beside the feed and filtrate connections on your drawing. If the wash relies on an external tank, leaving that tank out of the supply discussion leaves part of the process unresolved.<\/p>\n

\"ultrafiltration<\/p>\n

Pressure limits belong to specific connections<\/b><\/strong><\/h2>\n

Our LW-type hollow fiber ultrafiltration membrane<\/u><\/strong><\/a>\u00a0components can form part of standardized or customized LGW-type UF equipment, according to the project requirements. Keep both levels of specification in your pump review: the LW component limits and the requirements of the assembled equipment. One pressure figure cannot stand in for that distinction.<\/p>\n

The three LW pressure limits below describe different quantities. None is a recommended operating setpoint, and none should be copied into a specification as the pressure rating of an entire containerised plant.<\/p>\n\n\n\n\n\n\n
LW parameter<\/strong><\/td>\nPublished maximum<\/strong><\/td>\nDesign question<\/strong><\/td>\n<\/tr>\n
Inlet pressure<\/td>\n300 kPa<\/td>\nWhat pressure reaches the inlet?<\/td>\n<\/tr>\n
Transmembrane pressure (TMP)<\/td>\n120 kPa<\/td>\nWhat pressure difference acts across the membrane?<\/td>\n<\/tr>\n
Backwash pressure<\/td>\n250 kPa<\/td>\nWhat pressure is applied during backwash?<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

For ultrafiltration water treatment<\/u><\/strong><\/a>, distinguish filtration, washing and shutdown in your interface schedule. Enter the flow and pressure required at each connection in each applicable state. Trace what happens when a valve changes position or a wash starts. Matching pipe connections show where to join the equipment; the operating schedule explains how it will work together.<\/p>\n

\"hollow<\/p>\n

Net supply is the capacity worth comparing<\/b><\/strong><\/h2>\n

An hourly rate is only part of a municipal water treatment supply calculation. Enter the planned production hours beside it, then deduct the filtrate allocated to backwashing and other internal uses from the gross daily total. The result is the amount available for delivery under those assumptions. A quotation needs to state the assumptions as well as the result.<\/p>\n

Here is a hypothetical calculation. At 12 cubic metres per hour (m\u00b3\/h), 20 production hours yield 240 m\u00b3\/day of gross filtrate. Subtract an assumed 10 m\u00b3\/day for washing and other internal uses: 230 m\u00b3\/day remains, provided there are no other losses. These figures are for the calculation only, not HOSONWATER equipment ratings or an output forecast for your source.<\/p>\n

The difference matters when comparing proposals. One capacity figure may include internal consumption while another may exclude it. Put both on the same net-output basis, with the same feed conditions and operating hours. A larger hourly number can otherwise conceal a smaller daily supply.<\/p>\n

Separate production from demand timing as well. A daily total does not describe the morning demand peak. Your storage and delivery-pump review should use the demand pattern alongside the plant’s production schedule.<\/p>\n

\"smart<\/p>\n

Isolation and controls determine usable independence<\/b><\/strong><\/h2>\n

A maintenance shutdown is a practical test of the module boundary. On the drawing, close the isolation valves around one UF train and trace the remaining water path. Then locate the drain, wash connections and access needed to remove a component. The exercise exposes shared services that an equipment list can easily hide.<\/p>\n

Unsere smart water management system<\/u><\/strong><\/a>\u00a0shows turbidity, pH and salinity on dynamic process diagrams; equipment and valve status also appear there. That describes the display. Your project signal list must go further, recording the available signals and the response required for each alarm. Specify whether the operator must act or a control action is intended.<\/p>\n

Take a valve shown as open on the display. The status indication alone does not tell your operator whether a remote close command is permitted. Record that permission, the local controls and the required response to a lost connection. For the electrical review, work through loads that may coincide, including washing duties outside normal filtration.<\/p>\n

Expansion reaches beyond the extra treatment train<\/b><\/strong><\/h2>\n

An expansion plan needs a second operating scenario. Compare the initial arrangement with the future arrangement and trace the increased demand through shared equipment. An unchanged intake, common header or power connection can become the limiting item even when there is space for another container.<\/p>\n

Maintenance capacity deserves a separate check. Design capacities may not account for a unit being removed from service. Ask for the net supply with the selected train unavailable, rather than assuming that installed capacity equals available capacity. Where membrane units share washing services, staggered backwashing limits the number washing simultaneously.<\/p>\n

A modular layout that your team can evaluate<\/b><\/strong><\/h2>\n

Bring the process drawing, connection schedule and water balance to the same design review. Follow water through a production cycle, then through washing and a shutdown, checking the supply boundary wherever the route crosses between packages. Repeat with the proposed additional train drawn in. An unresolved shared-service connection is a design item to settle before your team allocates the expansion budget.<\/p>\n

FAQ (h\u00e4ufig gestellte Fragen)<\/b><\/strong><\/h2>\n

Does every module need its own container?<\/b><\/strong><\/h3>\n

No. Decide which equipment can share the space after checking service access, isolation and connections. You may group several process functions within one enclosure. Buying a separate container for each function does not, by itself, make those functions independently operable.<\/p>\n

Should repeated units use identical operating settings?<\/b><\/strong><\/h3>\n

Standardising hardware does not justify copying every setting. Your sites may have different feed conditions or production schedules. Retain a common equipment specification where appropriate, with operating settings approved for each duty.<\/p>\n

Is TMP the same as inlet pressure?<\/b><\/strong><\/h3>\n

No. TMP is the pressure difference across the membrane. The inlet value concerns one location in the water path. Your control schedule should identify where pressures are measured and which limit each measurement or calculated difference is checked against.<\/p>\n

How should bulk buyers compare repeated units?<\/b><\/strong><\/h3>\n

Put the proposed units against one technical schedule and mark any exceptions by site. A matching model description is not enough for your interchangeability review: compare the specified components and connections, then check the operating conditions attached to each duty.<\/p>\n

Who should own the connections between packages?<\/b><\/strong><\/h3>\n

Name the responsible party at each connection on the purchase drawing. For example, show whether the connecting pipework belongs to the same supply scope as its valve and instrument wiring. Your installation team then has a stated boundary to check, rather than a gap between two equipment lists.<\/p>","protected":false},"excerpt":{"rendered":"

Adding another container should solve a capacity problem. Suppose, however, that your feed pump is already supplying all the water it can deliver. An extra filtration line would still be waiting for feed. For a containerised water treatment plant, that is the first expansion question to resolve on paper: what else must change when you […]<\/p>\n","protected":false},"author":1,"featured_media":3783,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18,1],"tags":[],"class_list":["post-3780","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-news"],"_links":{"self":[{"href":"https:\/\/www.hosonwater.com\/de\/wp-json\/wp\/v2\/posts\/3780","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hosonwater.com\/de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.hosonwater.com\/de\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.hosonwater.com\/de\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hosonwater.com\/de\/wp-json\/wp\/v2\/comments?post=3780"}],"version-history":[{"count":1,"href":"https:\/\/www.hosonwater.com\/de\/wp-json\/wp\/v2\/posts\/3780\/revisions"}],"predecessor-version":[{"id":3784,"href":"https:\/\/www.hosonwater.com\/de\/wp-json\/wp\/v2\/posts\/3780\/revisions\/3784"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.hosonwater.com\/de\/wp-json\/wp\/v2\/media\/3783"}],"wp:attachment":[{"href":"https:\/\/www.hosonwater.com\/de\/wp-json\/wp\/v2\/media?parent=3780"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.hosonwater.com\/de\/wp-json\/wp\/v2\/categories?post=3780"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.hosonwater.com\/de\/wp-json\/wp\/v2\/tags?post=3780"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}