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A method of processing the sewage of industrial water treatment systems

A technology for industrial water treatment and treatment method, which is applied in the field of industrial sewage treatment, can solve the problems of large amount of supplementary water and circulating water, large amount of water in sewage treatment plants, heavy water treatment burden, etc., so as to save sewage treatment costs and improve comprehensive utilization rate. , the effect of less equipment

Active Publication Date: 2021-10-22
SICHUAN GOLDEN ELEPHANT SINCERITY CHEM CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Due to the large amount of supplementary water and circulating water used by each device, the amount of water that needs to be discharged to the sewage treatment plant is relatively large, and the amount of sewage discharge fees is huge. The early production enterprises have a heavy burden on water treatment.

Method used

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  • A method of processing the sewage of industrial water treatment systems

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Embodiment 1

[0020] This embodiment provides a sewage treatment method for a water treatment system, such as figure 1 As shown, the specific steps are as follows:

[0021] (1) External 300m 3 The raw water is first sent to the clarification tank, and flocculant is added to remove the suspended solids in the water. The clear water in the upper layer of the clarification tank is filtered through a sand filter and an activated carbon filter, and then reverse osmosis treatment to obtain 200m 3 Shallow desalinated water, of which 150m 3 As water replenishment for circulating water system, 50m 3 After ion exchange treatment, deep desalinated water is obtained, which is used as process water and boiler water replenishment, and the sludge-containing drainage in the lower part of the clarification tank is sent to the raw water sedimentation tank;

[0022] (2) 100m 3 The circulating water sewage (conductivity 1500μs / cm) is sent to the circulating water sedimentation tank, the upper clear water o...

Embodiment 2

[0027] This embodiment provides a sewage treatment method for a water treatment system, such as figure 1 As shown, the specific steps are as follows:

[0028] (1) 300m 3 The external raw water is first sent to the clarification tank, and flocculant is added to remove the suspended solids in the water. The clear water in the upper layer of the clarification tank is filtered through a sand filter and an activated carbon filter, and then reverse osmosis treatment to obtain 210 m 3 Shallow desalinated water, of which 150 m 3 As make-up water for circulating water system, 60 m 3 After ion exchange treatment, deep desalinated water is obtained, which is used as process water and boiler water replenishment, and the sludge-containing drainage in the lower part of the clarification tank is sent to the raw water sedimentation tank;

[0029] (2) 100m 3 Circulating water sewage (conductivity 1600μs / cm) is sent to the circulating water sedimentation tank, the upper layer of the sedimen...

Embodiment 3

[0034] This embodiment provides a sewage treatment method for a water treatment system, such as figure 1 As shown, the specific steps are as follows:

[0035] (1) 300m 3 The external raw water is first sent to the clarification tank, and flocculant is added to remove the suspended solids in the water. The clear water in the upper layer of the clarification tank is filtered through a sand filter and an activated carbon filter, and then reverse osmosis treatment to obtain 220m 3 Shallow desalinated water, of which 160m3 As water replenishment for circulating water system, 60m 3 After ion exchange treatment, deep desalinated water is obtained, which is used as process water and boiler water replenishment, and the sludge-containing drainage in the lower part of the clarification tank is sent to the raw water sedimentation tank;

[0036] (2) 90m 3 Circulating water sewage (conductivity 1600μs / cm) is sent to the circulating water sedimentation tank, the upper layer of the sedimen...

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Abstract

The invention belongs to the technical field of industrial sewage treatment, in particular to a treatment method for sewage in an industrial water treatment system. The method includes the following steps: the external raw water is first sent to the clarification tank, clarified by adding a flocculant, and the supernatant water is filtered and treated by reverse osmosis to obtain shallow desalinated water. The desalinated water is obtained as process water and boiler water replenishment; and ammonia-containing wastewater is mixed with circulating water and sewage after pH adjustment and ammonia removal, and sent to the clarification tank for treatment together with raw water. The sediment-containing water in the clarification tank is discharged to the raw water sedimentation tank, the sediment is separated by a horizontal screw centrifuge, and the reverse osmosis concentrated water and anion-cation exchange regeneration wastewater are directly discharged to the sewage plant. The present invention realizes NH in industrial wastewater by designing a reasonable process flow 4 + , Ca 2+ , Mg 2+ , SO 4 2+ and SiO 2 and other substances, and recover ammonia in wastewater, reduce water hardness, reduce sewage discharge, reduce sewage charges, and improve comprehensive utilization of water.

Description

technical field [0001] The invention belongs to the technical field of industrial sewage treatment, in particular to a treatment method for sewage discharged from an industrial water treatment system. Background technique [0002] In the original industrial water treatment device, the raw water is first sent to the clarification tank, and flocculant is added to the clarification tank to remove the suspended solids in the raw water. The sewage containing suspended solids in the clarification tank is separated by a horizontal centrifuge, and the sludge is filled into the green grass. The clear water in the upper layer of the clarification tank is combined, part of it is added to the circulating water system, and part of it is treated with sand filter, activated carbon filter, reverse osmosis, and anion and cation exchange to obtain deep desalinated water, which is used as process water or boiler water. Reverse osmosis concentrated water and anion-cation exchange wastewater are...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/04
CPCC02F1/001C02F1/20C02F1/283C02F1/38C02F1/42C02F1/441C02F1/52C02F1/66C02F9/00C02F2001/007C02F2301/08Y02A20/131
Inventor 唐印郭利红冯瑞冯安华
Owner SICHUAN GOLDEN ELEPHANT SINCERITY CHEM CO LTD
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