JPS596982A - Agent for treatment of waste water - Google Patents

Abstract

PURPOSE:To reduce the amount of formed excess sludge as small as possible, while eliminating troubles on management, by mixing the powder of plant texture containing plant secreting enzyme such as papain or bromelain with urea to prepare the tile agent for the treatment of waste water. CONSTITUTION:The rind and core of fruit discharged from a pineapple-processing factory, for instance, are gathered, dried below 60 deg.C and crushed to 50 meshes, and then 1kg crushed matter (containing 10,000 unit/g bromelain enzyme) is sufficiently kneaded with 1kg urea to prepare the agent for the treatment of waste water. By charging 10g said agent for the treatment of waste water by 1m<3> of discharged matter in an oil-water separating tank provided in an apparatus for purifying waste water from the cuisine of a restaurant on every fourth day, the elimination of scum and the reduction in the formation of an offensive odor can be performed. In this method, it is not necessary to refine the agent into a purified state, since the enzyme as the main component is not medical product. On the contrary, there is the merit that the use of raw enzyme fitting to the purpose.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an inexpensive manufacturing method for a chemical used in wastewater purification treatment, and its purpose is to clean, maintain and manage wastewater treatment equipment. The purpose is to eliminate problems and minimize the amount of excess sludge generated from equipment.

Conventionally, there are various agents used for wastewater purification treatment, and those directly related to microbial treatment include: ■ Large amounts of purification microorganisms are sealed in a variety of porous substrates in an active state. Filled with powder.

■Purification microorganisms are either dead or powdered containing a large amount of enzymes produced by them.

There are more than one commercially available.

For the former, use Niedomonas soil bacteria as much as possible.
The live bacteria are sealed in pearlite powder to prevent them from being damaged.

The latter is concentrated and dried, taking care not to degrade the enzymes produced by living bacteria.

All of these are intended to help purify wastewater by increasing the decomposition rate of inflow BOD by introducing them into wastewater microbial treatment equipment.

However, some wastewater lacks nutrients and nitrogen compounds necessary for the growth of purifying microorganisms. In such a case, even if the above-mentioned live bacteria are introduced, their growth will be suppressed.

A natural measure to be considered in such cases is the supplementation of nitrogen compounds. Therefore, when urea is added, the quality of the treated water is either good or there are soil bacteria11, which decompose the urea and generate ammonia, which causes odor. This phenomenon occurs not only when live bacteria are used, but also when soil fungus enzymes are used.

In the present invention, the latex contained in the fruits, stems, and leaves of plants is used as an enzyme source, so urea degrading enzyme is not included.
No ammonia is generated. This wood shows the principle that latex and urea can be mixed as a processing agent during production.

The reason for choosing urea as the nitrogen source as a feature of the present invention is as follows.

When ammonium sulfate, which is cheaper than urea, is used, the amount of sulfur in the wastewater increases, and sulfur bacteria such as Hegiatoa IS, which prefers this, proliferate, causing a kind of bulky state and making wastewater treatment impossible. .

When ammonium nitrate is used, it has an oxidizing effect on the enzyme, and the titer of the enzyme decreases.

In contrast, the use of urea does not have any of the problems listed below.

Examples of the present invention are shown below.

Example 1 - (1) Treatment agent: Collect fruit skins and cores discarded at the Binanapur factory.60
Air-dried below °C and ground to 50 ml (contains 10,000 units/9 of fromelino enzyme) 1 part 9 urea
・・Mix Ikg well to make a product.

(2) Results of use: Confirm whether scum is eliminated and odor is reduced by adding Product 109 every 3 days per 1 liter of wastewater to the oil-water separation tank installed in the wastewater treatment equipment of the Nippon Shokudo food kitchen. It was done.

Example 2 Knee (1) Treatment agent Liquid L1 secreted by wounding papaya fruit (Babai/
10g of the enzyme (containing a medium concentration of 200,000 enzymes) is evenly sprinkled on 1kg of urea and air-dried at 600C or less to obtain a product.

(2) Results of use: Is the wastewater ff1ln in the flow rate adjustment tank installed in the wastewater treatment equipment at the Sendai Kohayashi Bento Kitchen? It has been confirmed that by adding Product 109 every day, scum is eliminated, odor is reduced, and the visibility of the effluent water is improved.

The greatest feature of the present invention, as shown in the above examples, is that the enzyme, which is the main raw material, is not a pharmaceutical product, so there is no need to purify it into a pure product. What is added to this is urea, which is inexpensive and commonly used in fertilizers.

Therefore, the present invention can be fully implemented even in developing countries in the south, and the manufacturing cost is extremely low.

Claims (1)

[Claims] 1. A method for producing a wastewater treatment agent, which comprises mixing urea with a powder of plant tissue containing Vapai/ or Promerai/ as a plant secreted enzyme.