Total solution for the management of chemical related waste

(Industrial Waste Close-up 2008.04)

HACHIOH Co., Ltd.

Founded : February 1972
Location of head quarters : Kurihashi building 8F, 1-1-12 Higashi Ueno Taito-ku, Tokyo
URL : http://www.8080.co.jp/

Hachioji business premises

Major plant : ・Incineration plant (Vertical fixed bottom furnace x 1 unit) 4.62 tons/day (24 hours)
・Neutralization/ detoxifying plant 47 m3/day (8 hours)
・Dewatering plant (pressurized filter-press x 3 units) 34 m3/day (8 hours)
・Melting plant (tilting melting furnace x 1 unit and refining furnace x 1 unit) 180 kg/day (8 hours)
・Insolubilization plant 250kg/day (8 hours)
・Analysis lab. (IPC emission analyzer, X-ray fluorescence -analyzer, ultraviolet-visible light spectrophotometer, ion chromatography analyzer, automatic flash point tester, etc.)
Employee : 38 persons (23 operational workers)
Processable wastes :
(Research/Analysis related)

waste solution from analysis and experiment, waste reagent, instrument and equipment polluted with hazardous substance
(Photoengraving/Printing related) waste photographic developing solution, waste fixing solution, waste film, waste wash oil, waste ink.
(Industrial/production related) industrial effluent (waste acid, waste alkali, etc.), waste oils (solvent, paint), waste plastics, sludge, combustion residue, etc.
(Air conditioner/ Refrigerator) lithium bromide
Disposal achievement : 4,830 tons/year (October, 2006 through September, 2007)
Environmental management system : ISO 14001 (Head office/Tokyo facility, registered in September, 1999)
ISO 14001 (Company-wide, registered in September, 2000)

Introduction

For the creation of a sound material-cycle society, the cyclical use of resources has been promoted. Ensuring the proper management of hazardous chemical related waste is noted to be a condition for such a purpose. HACHIOH is a waste management business entity which has forty-year actual performance for chemical related waste management. This time, JW visited Hachioji business premises and took a look-around of the facility and interviewed president Mori on the present state of chemical related waste management business and their challenges (Photo 1). Note that president Mori was one of the members of the second meeting of “Environmental business women”, which was held when diet member, Koike was the Minister of the Environment.

From right to left, president Mori and general manager Fujii, commodity division
Photo 1 From right to left, president Mori and general manager Fujii, commodity division

Business environment

Recently, there has been growing concern among people about risks associated with hazardous chemical substances such as dioxins, PCB, and asbestos. In 1999, PRTR (Pollutant Release and Transfer Register) Law was enacted as a national control policy for chemical substances. It becomes mandatory to report the quantity of the specified chemical substances generated or transferred associated with business activities to the central government. Along with enactment of the law, needs for the proper disposal of chemical related waste tends to increase and thus, considering a wide variety of types, the well-thought-out management is required.

Steps for chemical related waste disposal

Disposal steps for contract waste are shown in Figure 1. The first step for the safe and proper disposal of contract waste is prior confirmation of waste information by means of data provided by clients and hearings from them. The second step is to carry out componential analysis and treatment tests using samples. The third step is to check shipping waste at the stages of collection and facility reception. The fourth step is an actual treatment. Based on prior information and results of sample analysis depending on hazardous component and chemical characteristics, a specific treatment for each waste is formulated and then an actual treatment is carried out. The fifth step is confirmatory analysis after the treatment, where the satisfactory treatment is confirmed by analyzing treatment residues (Photo 2). HACHIOH’s competitive edge in managing a wide variety of chemicals of limited quantity can be seen in the flow.

IPC emission spectrophotometer
Photo 2 IPC emission spectrophotometer

Information collection and management support on waste

The most important point in the treatment steps in Figure 1 is to collect information from clients as much as possible. To actively do so, HACHIOH supports client’s waste management activities. As for the provision of waste information by clients, “Guideline for the provision of waste information, in short WDS guideline” was released on April 28, 2006 as a Ministry of the Environment notice based on Article 8-4-2,subparagraph 6 of the enforcement regulation of Waste Management Law. HACHIOH uses its originally developed datasheet along with such guideline. Furthermore, it provides environment site advice service to support client’s waste management, and promotes the preparation and publication of chemical substance self-management guide book useful for test or research facilities.

Hazardous waste disposal system (steps to the completion of disposal)
Figure 1 Hazardous waste disposal system (steps to the completion of disposal)

Treatment flow

The schematic diagram of waste treatment flow at HACHIOH business premise is shown in Figure 2. A wide variety of contract chemical related wastes go through various pretreatment processes including sorting, separation and disintegration after reception and checking steps, and then join together in a waste disposal line such as neutralization, detoxification, dewatering, incineration, insolubilization, and melting and thus, are treated adequately.

Waste treatment flow
Figure 2 Waste treatment flow

Challenges for further growth

A business model followed by HACHIOH is to pursue a chemical related waste disposal needed by a society by utilizing a generation source control and treatment site experiences accumulated from substance to substance in a synergistic manner, by taking into account of a trend of self-management by a company such as controlled use in chemical substance management. To grow in the future based on this business model and to develop human resources seems to be the largest challenge toward a goal. In November 2007, “CW logistic solution center” was opened as a new base in Kanagawa prefecture. It certainly works for the enhancement of secure and safe waste management with improved transshipment and storage functions depending on waste characteristics and treatment methods as well as strengthened traceability function. In addition to such domestic activities, it is expected for HACHIOH to extend its business activities with an eye to Asian markets showing high potential needs for the proper disposal of hazardous waste.

(Reported by Ozaki, JW)