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Wastewater zero discharge treatment system and process

A treatment system and zero-discharge technology, applied in water/sewage treatment, heating water/sewage treatment, oxidized water/sewage treatment, etc., can solve the problems of large investment, high operating cost, and complex formulation of chemicals, and simplify the process flow , Eliminate foul smell, high cost effect

Pending Publication Date: 2021-10-15
内蒙古金河环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the existing reverse osmosis membrane process, the reverse osmosis membrane section has too high requirements on the feed water, and it needs to remove hardness (calcium, magnesium ions) before entering the medium and high pressure reverse osmosis membrane section, and the formulation of the agent used for hardness removal is complicated. , high operating costs, need to build two high-density softening pools, large investment

Method used

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  • Wastewater zero discharge treatment system and process
  • Wastewater zero discharge treatment system and process
  • Wastewater zero discharge treatment system and process

Examples

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Embodiment approach 1

[0087] figure 1 It is a schematic structural diagram of a wastewater treatment zero discharge system according to Embodiment 1 of the present invention; figure 2 Schematic diagram of the zero-discharge process flow for wastewater treatment according to Embodiment 1.

[0088] Such as figure 1 As shown, the wastewater treatment zero discharge system includes a pretreatment unit, a membrane concentration unit, an evaporative crystallization unit, and a solid salt treatment unit for sequentially treating raw wastewater, as well as a water collection system for collecting the produced water from the membrane concentration unit and evaporative crystallization unit. The product pool; the pretreatment unit includes a collection pool and ultrafiltration equipment, and the membrane concentration unit includes the first reverse osmosis membrane equipment (sub-osmosis membrane equipment), high-density softening water tank, multi-media filter, nanofiltration equipment and second reverse ...

Embodiment approach 2

[0104] image 3 Schematic diagram of the structure of the wastewater treatment zero discharge system according to Embodiment 2; Figure 4 Schematic diagram of the zero-discharge process flow for wastewater treatment according to Embodiment 2. It is different from Embodiment 1 mainly in the following aspects:

[0105] Such as image 3 As shown, the wastewater zero discharge treatment system also includes a sludge treatment unit for collecting the sludge generated by the membrane concentration unit, and the sludge treatment unit includes a sludge tank and a sludge dehydration device.

[0106] In this embodiment, if Figure 4 As shown, the sludge treatment unit receives the sludge generated from the high-density softening tank of the membrane concentration unit, and processes the sludge. In this embodiment, the sludge dehydration equipment concentrates the sludge and prepares it as an auxiliary material for building materials , the control conditions for concentration of slud...

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Abstract

The invention relates to a wastewater zero discharge treatment system and process. The system comprises a pretreatment unit, a membrane concentration unit, an evaporative crystallization unit and a solid salt treatment unit which are used for treating raw material wastewater in sequence, and a product water tank for collecting water produced by the membrane concentration unit and the evaporative crystallization unit, wherein the raw material wastewater is wastewater subjected to aerobic treatment; the pretreatment unit comprises a collecting water tank and ultrafiltration equipment, the membrane concentration unit comprises first reverse osmosis membrane equipment, a high-density softening water tank, a multi-medium filter, nanofiltration equipment and second reverse osmosis membrane equipment which are connected in sequence, and the evaporative crystallization unit comprises multi-effect evaporative crystallization equipment; and the first reverse osmosis membrane equipment is sub-osmosis membrane equipment. According to the invention, the sub-permeable membrane and the medium-high pressure reverse osmosis are combined for the first time to be applied to the multi-source, mixed and complex wastewater treatment in the industrial park so as to achieve the zero discharge of wastewater, waste gas and waste residue.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a wastewater zero-discharge treatment system and process. Background technique [0002] Chemical and biopharmaceutical processes will produce a large amount of wastewater, including production wastewater such as 6-aminopenicillanic acid, aureomycin, abamectin, coenzyme Q10, amoxicillin, ampicillin, piperacillin, and sulbactam , These wastewaters are usually concentrated in the park's sewage treatment plant for pretreatment and biochemical treatment to meet industrial discharge requirements. Due to the complex composition of these wastewaters, which contain sulfate radicals, various organic substances, alcohols, hydrogen sulfide, and unused raw materials for fermentation, in the process of treating the above wastewaters, not only unorganized exhaust gas containing unpleasant odors will be produced , has a certain impact on human and animal health, and the...

Claims

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Application Information

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IPC IPC(8): C02F9/10C02F11/122
CPCC02F9/00C02F11/122C02F1/444C02F1/441C02F1/04C02F2303/02C02F5/00C02F1/56C02F1/5236C02F1/442C02F1/76
Inventor 田中宏赵冬张祥海谷磊徐宝田洪峰
Owner 内蒙古金河环保科技有限公司
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