How to select fine bubble in 8T/d coating cleaning wastewater treatment
Aug 28, 2018

Design range

The design scope is the treatment line cleaning process of the degreasing process of the coating line;

The design boundary starts from the inlet flange of the water treatment equipment and ends at the outlet flange of the water treatment equipment.

Design Basis

1. Water quality specification for metal coating and chemical coating process;

2. Water quality of industrial water;

3. Experience and information on similar projects accumulated by our company;

4. Party A provides relevant information on production technology and raw materials;

Sewage basic data

1. Sewage volume: 5m3/h

2. Sewage water quality:

PH: 6-9

CODcr: 350mg/l

SS: 200mg/l

Ammonia nitrogen: 30 mg/l.

Total phosphorus: 4 mg/l

3. Emission standards:

 the national sewage comprehensive discharge standard three-level standard and the discharge of sewage into urban sewer water quality standards

             PH: 6-9

             CODcr: 150mg/l

SS: 150mg/l

Sewage treatment process

Domestic sewage ----grid---- adjustment tank---- integrated sewage treatment equipment (A/O)

Selection of Fine bubble diffuser for in 8T/d coating cleaning wastewater treatment


Fine Bubble Disc Diffuser Introduction

1.The Fine Bubble Disc Diffuser consists of a rubber diaphragm, several air flow guiding grooves, a chassis support and a spiral gland.

2.The diaphragm is made of high quality rubber raw material and installed on the chassis bracket.

Technical parameters


Working principle of Fine Bubble Diffuser

The chassis support is the support of the diaphragm, which is arched. The upper part of the chassis support is provided with eight air diversion grooves which are distributed around the center to ensure that the air is evenly distributed. The spiral cap joins the lower part of the chassis support to the chassis support. The diaphragm is fixed on the chassis support. The chassis support and the spiral cap are molded by quality ABS engineering plastics.

More inquiries can be contacted from KHN water treatment equipments Co., Ltd.(



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