Sewage treatment system used in precision-investment casting technique

A sewage treatment system and investment casting technology, which are applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve environmental pollution, waste of water resources, high ammonia and chlorine content problems, to achieve the effect of saving water resources, good filtering effect, and reducing casting costs

Inactive Publication Date: 2013-10-16
TIANCHANG TIANXIANG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The industrial wastewater produced in the investment casting process has a high content of ammonium chloride, as well as a large amount of wax oil and suspended solids contained in the wastewater. If it is not treated or handled improperly, it will cause serious pollution to the environment.
At the same time, it also causes waste of water resources

Method used

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  • Sewage treatment system used in precision-investment casting technique

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Embodiment 1

[0020] A sewage treatment system for an investment precision casting process, including a sewage pool 1 for collecting workshop sewage, and a sedimentation tank 2, a sand filter tank 3, an anaerobic hydrolysis tank 4, and clear water that are sequentially connected to the sewage pool 1 Pool 5, the sand filter 3 includes a primary sand filter and a secondary sand filter, the sand filter 3 is composed of an inverted trapezoidal open container and filter sand laid in the open container; The oxygen hydrolysis pool 4 is composed of a primary anaerobic hydrolysis pool, a secondary anaerobic hydrolysis pool, a third anaerobic hydrolysis pool and a fourth anaerobic hydrolysis pool.

[0021] The filter sand in the primary sand filter has a particle size of 100 mesh, and the filter sand in the secondary sand filter has a particle size of 200 mesh.

[0022] The working process of the present invention is as follows: the sewage from the investment precision casting workshop is collected i...

Embodiment 2

[0025] A sewage treatment system for an investment precision casting process, including a sewage pool 1 for collecting workshop sewage, and a sedimentation tank 2, a sand filter tank 3, an anaerobic hydrolysis tank 4, and clear water that are sequentially connected to the sewage pool 1 Pool 5, the sand filter 3 includes a primary sand filter and a secondary sand filter, the sand filter 3 is composed of an inverted trapezoidal open container and filter sand laid in the open container; The oxygen hydrolysis pool 4 is composed of a primary anaerobic hydrolysis pool, a secondary anaerobic hydrolysis pool, a third anaerobic hydrolysis pool and a fourth anaerobic hydrolysis pool. The particle size of the filter sand in the primary sand filter is 100 mesh, and the particle size difference of the filter sand in the secondary sand filter is 150 mesh.

[0026] The working process of the present invention is as follows: the sewage from the investment precision casting workshop is collect...

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Abstract

The invention discloses a sewage treatment system used in a precision-investment casting technique. The sewage treatment system comprises a sewage tank for collecting sewage in a workshop, and a sedimentation tank, a sand filter, an anaerobic hydrolysis pond and a clean water tank which are communicated with the sewage tank in sequence, wherein the sand filter comprises a one-stage sand filter and a two-stage sand filter; the sand filter consists of a converse-trapezoid opening container and filter sand paved in the opening container; the anaerobic hydrolysis pond consists of a one-stage anaerobic hydrolysis pond, a two-stage anaerobic hydrolysis pond, a three-stage anaerobic hydrolysis pond and a four-stage anaerobic hydrolysis pond. The sand filter comprises the one-stage sand filter and the two-stage sand filter, so that toxic impurities such as ammonia and chlorine in the sewage can be effectively filtered, the filter effect is good, the sewage after treatment can meet the standard of industrial water, and the sewage treatment system is low in cost during running.

Description

technical field [0001] The invention relates to a sewage treatment system, in particular to a sewage treatment system for an investment precision casting process. Background technique [0002] Investment casting, also known as "lost wax casting", usually refers to making a pattern from a fusible material, coating several layers of refractory material on the surface of the pattern to make a shell, and then melting the pattern out of the shell to obtain a non-parting surface The casting mold can be filled with sand and poured after high-temperature roasting. Since patterns are widely made of waxy materials, investment casting is often referred to as "lost wax casting". the [0003] The types of alloys that can be produced by investment casting include carbon steel, alloy steel, heat-resistant alloy, stainless steel, precision alloy, permanent magnet alloy, bearing alloy, copper alloy, aluminum alloy, titanium alloy and ductile iron. The shape of investment castings is gener...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 徐乐高徐大兵
Owner TIANCHANG TIANXIANG GRP
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